Definition
the meat in question is of low quality
Examples
1) I'm not sure what kind of meat is in this sandwich, but it tastes like
mystery meat.
2) I don't trust those school lunches - the meat always looks like some kind
of mystery meat.
Etymology
soldiers were sometimes served meals containing meat of unknown origin or composition
Synonym unidentified meat
- englishdaily626.com [edited]
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Pork tasted funny, I reported back first after landing in America. We chalked it
up to the way hogs were butchered, i.e., by electricution instead of knifing and
blood-letting, as we did in northern Chinese villages.
The other day, someone posted on Facebook:
"160 countries banned or restricted it. The FDA approved it in 1999. About
60 to 80% of US pigs are given ractopamine."
The mystery only goes deeper.